BlockThingsIterator confusion

[Silentdarkness12]

I'm working on a Hideous Destructor addon, and there is this chunk of code I am struggling to make work. I want the actor in question(which is a weapon if that matters) to do a line of sight and proximity check for HDBarrel and BarrelGremlin(the actor that attacks from HDBarrel) and then sets state accordingly.

Code: Select all

ThinkerIterator GremlinIterator = ThinkerIterator.Create("BarrelGremlin");
	BlockThingsIterator BarrelIterator = BlockThingsIterator.Create(self,100.0);
	BarrelGremlin grem;
	HDBarrel gbar;
	HDBarrel barbar;
	while(grem = BarrelGremlin(GremlinIterator.Next()))
		{
		if(grem.master.GetClassName() == "HDBarrel")
			{
			gbar = HDBarrel(grem.master);
			}
			else
			{
			A_Log("Orphaned Gremlin?!");
			}
		}
		if(IsVisible(BarrelIterator.Actor("HDBarrel"),false,null)&& CheckProximity(BarrelIterator.Actor("HDBarrel"),100.0,1,CPXF_SETTARGET))
					{
					SetStateLabel("BarrelWarn");
					}
					else if(IsVisible(barbar,false,null)&& CheckProximity(barbar.GetClassName(),100.0,1,CPXF_SETTARGET))
					{
					SetStateLabel("BarrelSucc");
					}
	}

I've tried a number of different combinations but I can't make it work. It always throws a failure to convert error at me or some other if syntax nonsense. How exactly am I supposed to use BlockThingsIterator to pass the information I want to the else if here?